CN109896371A - A kind of communication system in elevator - Google Patents
A kind of communication system in elevator Download PDFInfo
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- CN109896371A CN109896371A CN201711309624.1A CN201711309624A CN109896371A CN 109896371 A CN109896371 A CN 109896371A CN 201711309624 A CN201711309624 A CN 201711309624A CN 109896371 A CN109896371 A CN 109896371A
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- elevator
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- electrically connected
- communication data
- mpu
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Abstract
The embodiment of the invention discloses the communication system in a kind of elevator, which includes: main control end and from control terminal；Main control end is placed in elevator(lift) machine room, it is connect by safety bus with from control terminal, including the elevator logic MPU and the first serialization controller being electrically connected to each other, for receiving the carriage integrated communication data transmitted from control terminal, control carriage movement, switch control signal is generated, and generates switch control communication data according to secure communication protocols, is transferred to by safety bus from control terminal；It is placed on lift car from control terminal, including the car top MPU and the second serialization controller being electrically connected to each other, for carriage integrated signal to be generated carriage integrated communication data according to secure communication protocols, main control end is transferred to by safety bus, it is also used to receive the switch control communication data of main control end transmission, control gate movement.The embodiment of the present invention reduces the quantity of trailing cable in running process of elevator, reduces the installation and maintenance cost of elevator.
Description
Technical field
The present embodiments relate to the communication systems in the information communications field more particularly to a kind of elevator.
Background technique
With the development of economy and society, the competition of elevator industry is more and more fierce, market also proposes the cost of entire elevator
Higher requirement is gone out, has reduced elevator cost and have become required work during control system's development.And existing elevator is logical
Letter mainly passes through computer room logic microprocessor unit (micro processor unit, MPU) between 31 and car top MPU32
Input/output (input/output, I/O) is point-to-point to be attached, as shown in Figure 1, computer room and the signal of car top pass through photoelectricity
It after isolator 33, is all attached by the way that I/O is point-to-point, realizes communications.
The communication mode of I/O point-to-point connection increases the trailing cable quantity in elevator, elevator increased costs.
Summary of the invention
The embodiment of the invention provides the communication systems in a kind of elevator, to reduce the quantity of trailing cable in elevator, drop
Low elevator cost.
In a first aspect, the embodiment of the invention provides the communication system in a kind of elevator, the system include: main control end and
From control terminal；
The main control end, is placed in elevator(lift) machine room, is connect with described from control terminal by safety bus, including mutually electricity
The elevator logic microprocessor MPU and the first serialization controller of connection, it is comprehensive for receiving the carriage transmitted from control terminal
Communication data, control carriage movement, and switch control signal is generated, the switch control signal is raw according to secure communication protocols
The safety bus is controlled by the switch control communication data at switch control communication data, and by the first serialization controller
It is transferred to described from control terminal, control gate movement；
It is described to be placed on lift car from control terminal, including the car top MPU and the second serialization controller being electrically connected to each other,
For carriage integrated signal to be generated the carriage integrated communication data according to the secure communication protocols, and it is serial by second
Controller controls the safety bus and the carriage integrated communication data is transferred to the main control end, and control carriage moves,
It is also used to receive the switch control communication data of the main control end transmission, control gate movement.
Communication system in a kind of elevator provided in an embodiment of the present invention, according to secure communication protocols generate main control end with
From the communication data transmitted between control terminal, and pass through the string of data-signal between safety bus realization elevator(lift) machine room and lift car
Row communication, to reduce the quantity of trailing cable in running process of elevator, reduces the installation and maintenance cost of elevator.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram that point-to-point connection communicates between elevator logic MPU in the prior art and car top MPU；
Fig. 2 is the structural block diagram of the communication system in a kind of elevator that the embodiment of the present invention one provides；
Fig. 3 is the flow chart that secure communication protocols are formulated in the system of the offer of the embodiment of the present invention one；
Fig. 4 is the structural block diagram of the communication system in a kind of elevator provided by Embodiment 2 of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 2 is the structural block diagram of the communication system in a kind of elevator that the embodiment of the present invention one provides, and the present embodiment can fit
For in the installation and maintenance to any elevator, which specifically includes main control end 1 and from control terminal 2.
Wherein, main control end 1 is placed in elevator(lift) machine room, is connect by safety bus with from control terminal 2, including mutually electricity
The elevator logic microprocessor MPU 11 and the first serialization controller 14 of connection, it is comprehensive for receiving the carriage transmitted from control terminal
Communication data, control carriage movement, and switch control signal is generated, switch control signal is opened according to secure communication protocols generation
Control communication data is closed, and is given switch control communication data transfer from control by the first serialization controller 14 control safety bus
End processed, control gate movement；It from control terminal 2, is placed on lift car, is gone here and there including the car top MPU21 being electrically connected to each other and second
Line control unit 22 for carriage integrated signal to be generated carriage integrated communication data according to secure communication protocols, and passes through second
Serialization controller 22 controls safety bus and carriage integrated communication data is transferred to main control end 1, and control carriage movement is also used to
Receive the switch control communication data of main control end transmission, control gate movement.Specifically, carriage integrated signal include hall door,
The signals such as carriage, door machine and user's operation.
Wherein, elevator logic MPU11 is used for the operation information and door area information inputted according to user in carriage, generates switch
Signal is controlled, and switch control signal is packaged according to secure communication protocols and generates switch control communication data.Specifically, switch
Control signal may include the signals such as area and switch gate instruction.Further, secure communication protocols are safety standard
OpenSAFETY communication protocol, agreement have specifically included format, coding and level of signal of communication data etc. and Content of Communication
With communications sequence, specifically, the frame head of data frame, postamble sum number in communication protocol definition communication data in the present embodiment
According to the Cyclic Redundancy Check Code (Cyclic Redundancy Check, CRC) of content and data frame length and data, realize
The error detection function of communication data transfer.Further, secure communication protocols meet safety integrity level (Safety
Integrity Level, SIL) in setting grade requirement, wherein the determination of SIL needs to carry out elevator safety system risk point
Analysis, is the foundation that can assessment system guarantee elevator safety.Specifically, SIL grade classification be 4 grades, i.e. SIL1, SIL2, SIL3,
SIL4 judges elevator safety rank by risk analysis, and elevator safety sets grade as the third level in the present embodiment.Into one
Step, secure communication protocols pre-establish, as shown in figure 3, user formulates the step flow chart tool of secure communication protocols
Body includes:
S110 selectes SIL grade.
Specifically, according to elevator safety system risk analysis, it is that selected lift running safety, which requires the SIL grade met,
Three-level.
S120 chooses data frame length.
Specifically, data frame length of the user by adjusting communication data in secure communication protocols, makes SIL grade meet electricity
The setting grade of terraced safety requirements.
S130 chooses check code CRC parameter.
Specifically, user further makes by adjusting the value of Cyclic Redundancy Check Code CRC parameter in secure communication protocols
SIL grade meets the setting grade of elevator safety requirement.
S140 chooses suitable cable.
Specifically, more superior, transporting and the higher cable of safety pass communication data by selection performance
It is defeated, so that SIL grade is met the setting grade of elevator safety requirement.Step S120, S130, S140 are provided to make
SIL grade meets the setting grade of elevator safety requirement, can also be by adjusting the value of the other parameters in secure communication protocols
Being that security level meets setting.
Whether S150, the SIL grade reached meet setting class requirement.If so, executing S160；If it is not, executing S120.
Specifically, by the value for further adjusting the parameters such as corresponding data frame length and CRC code in communication protocol, and select
After selecting the more superior cable of performance, judge whether the SIL grade reached meets the security level requirement of setting, when being unsatisfactory for setting
When determining class requirement, continue to adjust the relevant parameter in communication protocol, circulation is judged, until SIL grade meets setting etc.
The requirement of grade.
S160 formulates secure communication protocols according to security strategy matrix.
Specifically, security strategy matrix includes every relevant parameter in the secure communication protocols of user's adjustment, it is specific to wrap
The relevant parameters such as data frame length and check code CRC are included, according to the security strategy matrix generated by relevant parameter in communication protocol
Formulate secure communication protocols.
Technical solution provided in this embodiment generates main control end according to secure communication protocols and from transmitting between control terminal
Communication data, and by the serial communication of data-signal between safety bus realization elevator(lift) machine room and lift car, to reduce
The quantity of trailing cable in running process of elevator reduces the installation and maintenance cost of elevator.
Embodiment two
Fig. 4 is the structural block diagram of the communication system in a kind of elevator provided by Embodiment 2 of the present invention, and the present embodiment is upper
It states and is optimized on the basis of embodiment, specifically, main control end 1 further includes serial MPU12, serial MPU12 is connected electrically in
Between elevator logic MPU11 and the first serialization controller 14, for receiving the carriage integrated communication data transmitted from control terminal, and
It is sent to elevator logic MPU11, is also used to receive the switch control signal of elevator logic MPU11 transmission, by switch control signal
Switch control communication data is generated according to secure communication protocols, and control safety bus by the first serialization controller 14 to switch
Control communication data transfer is given from control terminal.Wherein, being electrically connected between serial MPU12 and elevator logic MPU11 is to pass through peace
What National Federation of Trade Unions's line was realized.Specifically, secure communication protocols are openSAFETY communication protocol 13.To elevator logic in the prior art
I/O point-to-point connection between MPU11 and car top MPU21 becomes communications cable connection, and solves using communication mode transmission letter
Number when, the problem of security risk of elevator device increases, carrying out processing to transmission signal using serial MPU12 can be improved communication
Influence to elevator device security level meets requirement of the elevator operation to security level.
Further, main control end 1 further includes the first differential level converter 15, and is electrically connected with the first serialization controller 14
It connects, the level signal comprising switch control communication data is converted into differential signal, controlled and pacified by the first serialization controller 14
For National Federation of Trade Unions's line by differential signal transmission to from control terminal 2, solution causes transmission signal to be interfered because elevator trailing cable is too long
The problem of with decaying, improve the anti-interference ability of communication.
Further, further include the second differential level converter 23 from control terminal 2, and be electrically connected with the second serialization controller 22
It connects, the level signal comprising carriage integrated communication data is converted into differential signal, controlled and pacified by the second serialization controller 22
National Federation of Trade Unions's line solves differential signal transmission to main control end 1 to cause transmission signal to be interfered because elevator trailing cable is too long
The problem of with decaying, improve the anti-interference ability of communication.
Further, the first differential level converter 15 is electrically connected by safety bus with the second differential level converter 23
It connects.Optionally, safety bus can be RS-485, fieldbus, controller local area network (Control Area Network,
CAN) bus etc. can carry out the bus of signal transmission.Further, by using black channel principle, openSAFETY is generation
The security protocol of any field bus system transfer of security data can uniquely be passed through in boundary, wherein black channel principle is namely
Secure communication principle PROFIsafe, including standard transmission system and its on secure transfer protocol, PROFIsafe makes standard
Field bus technique and fail safe technology are combined into a system, i.e., failure safe communication and standard traffic are on same root cable
It coexists, secure communication is not realized by excess cable.
Further, main control end 1 further includes third serialization controller 16 and third differential level converter 17, third string
Line control unit 16 is electrically connected by openSAFETY communication protocol 13 with serial MPU12, and with third differential level converter 17
Electrical connection, further includes the 4th serialization controller 24 and the 4th differential level converter 25, the 4th serialization controller 24 from control terminal 2
It is electrically connected by openSAFETY communication protocol 13 with car top MPU21, and is electrically connected with the 4th differential level converter 25.Into one
Step, third differential level converter 17 is electrically connected by safety bus with the 4th differential level converter 25.
Specifically, the serial control of circuit and first that third serialization controller 16 is electrically connected with third differential level converter 17
The dual communication that the circuit that device 14 processed is electrically connected with the first differential level converter 15 constitutes the hardware redundancy in main control end 1 is logical
Road carries out redundant transmission to the data frame comprising switch control communication data, reduces the failure probability of communication.
Specifically, the serial control of circuit and second that the 4th serialization controller 24 is electrically connected with the 4th differential level converter 25
The dual communication that the circuit that device 22 processed is electrically connected with the second differential level converter 23 constitutes the hardware redundancy from control terminal 2 is logical
Road carries out redundant transmission to the data frame comprising carriage integrated communication data, reduces the failure probability of communication.
The course of work of this system is illustratively described below:
Wherein, main control end 1 and from control terminal 2 be all input signal is generated by openSAFETY communication protocol 13 it is logical
Letter data controls safety bus by serialization controller and is transmitted.Specifically, user enters lift car, pressed by floor
Button inputs the operation signal of user, and the signals such as comprehensive door machine, hall door and gate generate carriage integrated signal, and carriage MPU21 connects
After receiving carriage integrated signal, carriage integrated communication data are generated by openSAFETY communication protocol 13, and pass through the second string
Line control unit 22 and the second differential level converter 23, which are electrically connected, is converted to differential signal, the second serialization controller for level signal
22 control safety bus are by this differential signal transmission to main control end 1, then pass through the first differential level converter 15 and the first string
Differential signal is converted to level signal by the electrical connection of line control unit 14, can also pass through the 4th serialization controller 24 and the 4th difference
Level signal is converted to differential signal by the electrical connection of level translator 25, and the 4th serialization controller 24 controls safety bus, and this is poor
Sub-signal is transmitted to main control end 1, then will be poor by third differential level converter 17 and the electrical connection of third serialization controller 16
Sub-signal is converted to level signal, and obtains carriage integrated communication data by the parsing of openSAFETY communication protocol 13 and be transferred to
Serial MPU12 is transferred to elevator logic MPU11 finally by safety bus, to control carriage movement；The electricity of main control end 1
Terraced logic MPU11 generates switch control signal according to the carriage integrated communication data received are corresponding, and the switch control is believed
Number it is sent to serial MPU12, switch control communication data is generated by openSAFETY communication protocol 13, and serial by first
Controller 14 and the first differential level converter 15, which are electrically connected, is converted to differential signal, the first serialization controller 14 for level signal
Safety bus is controlled by this differential signal transmission extremely from control terminal 2, then serial by the second differential level converter 23 and second
Differential signal is converted to level signal by the electrical connection of controller 22, can also pass through third serialization controller 16 and third differential electrical
Level signal is converted to differential signal by the electrical connection of flat turn parallel operation 17, and third serialization controller 16 controls safety bus for this difference
Signal is transmitted to from control terminal 2, then is electrically connected by the 4th differential level converter 25 and the 4th serialization controller 24 by difference
Signal is converted to level signal, and obtains switch control communication data by the parsing of openSAFETY communication protocol 13 and finally transmit
Car top MPU21 is given, car top MPU21 is according to the signals control such as the door area for including in the switch control signal received and switch gate instruction
Gate movement processed.
Technical solution provided in this embodiment, by can be in any field bus system transfer of security data
OpenSAFETY communication protocol generates in main control end and from the communication data transmitted between control terminal, realizes string between the two
Row communication, improves the influence communicated to elevator device security level, meets requirement of the elevator operation to security level, and reduce
The quantity of trailing cable, reduces elevator installation and maintenance cost in running process of elevator.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (7)
1. the communication system in a kind of elevator characterized by comprising main control end and from control terminal；
The main control end, is placed in elevator(lift) machine room, is connect with described from control terminal by safety bus, including be electrically connected to each other
Elevator logic microprocessor MPU and the first serialization controller, for receiving the carriage integrated communication transmitted from control terminal
Data, control carriage movement, and switch control signal is generated, the switch control signal is opened according to secure communication protocols generation
Control communication data is closed, and the safety bus is controlled for the switch control communication data transfer by the first serialization controller
To described from control terminal, gate movement is controlled；
It is described to be placed on lift car from control terminal, including the car top MPU and the second serialization controller being electrically connected to each other, it is used for
Carriage integrated signal is generated into the carriage integrated communication data according to the secure communication protocols, and passes through the second Serial Control
Device controls the safety bus and the carriage integrated communication data is transferred to the main control end, and control carriage movement is also used
In the switch control communication data for receiving the main control end transmission, control gate movement.
2. system according to claim 1, which is characterized in that the main control end further includes serial MPU；
The serial MPU is connected electrically between the elevator logic MPU and first serialization controller, for receive it is described from
The carriage integrated communication data of control terminal transmission, and it is sent to the elevator logic MPU, it is also used to receive the elevator and patrols
The switch control signal that MPU is sent is collected, the switch control signal is generated into the switch according to secure communication protocols and is controlled
Communication data processed, and the safety bus is controlled for the switch control communication data transfer to institute by the first serialization controller
It states from control terminal.
3. system according to claim 2, which is characterized in that the secure communication protocols are safety standard openSAFETY
Communication protocol.
4. system according to claim 1, which is characterized in that the main control end further includes the conversion of the first differential level
Device, the first differential level converter are electrically connected with first serialization controller；
Described from control terminal further includes the second differential level converter, and the second differential level converter is serial with described second
Controller electrical connection；
The first differential level converter is electrically connected by the safety bus with the second differential level converter.
5. system according to claim 4, which is characterized in that the main control end further includes third serialization controller and
Three differential level converters, the third serialization controller are electrically connected by the secure communication protocols with the serial MPU, and
It is electrically connected with the third differential level converter.
Described from control terminal further includes the 4th serialization controller and the 4th differential level converter, and the 4th serialization controller is logical
It crosses the secure communication protocols to be electrically connected with the car top MPU, and is electrically connected with the 4th differential level converter；
The third differential level converter is electrically connected by the safety bus with the 4th differential level converter.
6. -5 any system according to claim 1, which is characterized in that the secure communication protocols meet safety integrity
The requirement of grade is set in grade SIL.
7. system according to claim 6, which is characterized in that the grade that sets is the third level.
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| CN201711309624.1A CN109896371B (en) | 2017-12-11 | 2017-12-11 | Communication system in elevator |
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| CN201711309624.1A CN109896371B (en) | 2017-12-11 | 2017-12-11 | Communication system in elevator |
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| CN109896371B CN109896371B (en) | 2021-08-27 |
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Cited By (2)
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| CN108910637A (en) * | 2018-07-18 | 2018-11-30 | 迅达（中国）电梯有限公司 | security system |
| CN113460818A (en) * | 2020-03-31 | 2021-10-01 | 苏州汇川技术有限公司 | Elevator electronic board communication system, method, device and computer readable storage medium |
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| Publication number | Publication date |
|---|---|
| CN109896371B (en) | 2021-08-27 |
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